export interface TestCommandOptions {
    description?: string;
    stdout?: string | boolean;
    stderr?: string | boolean;
    exit?: number;
    root?: string;
}
export declare type TestCommandCallback<T> = (output: T) => Promise<void> | void;
export interface TestCommand {
    (args: string[], opts: TestCommandOptions & {
        stdout: true;
        stderr: true;
    }, fn: TestCommandCallback<{
        stdout: string;
        stderr: string;
    }>): void;
    (args: string[], opts: TestCommandOptions & {
        stdout: true;
    }, fn: TestCommandCallback<{
        stdout: string;
    }>): void;
    (args: string[], opts: TestCommandOptions & {
        stderr: true;
    }, fn: TestCommandCallback<{
        stderr: string;
    }>): void;
    (args: string[], opts: TestCommandOptions, fn?: TestCommandCallback<{}>): void;
}
export declare const testCommand: TestCommand;